OneKey Recovery BitLocker Compatible?

I'm unable to create a backup using OneKey Recovery - it just freezes (no error is shown).

I've determined the problem seems to be related to BitLocker.

OneKey won't proceed to the choose partition screen if my system drive is encrypted with BitLocker. No error is message is shown - but pressing the orange Next button has no effect. There is a 28GB unallocated partioned ready for OneKey to use.

If I disable BitLocker, OneKey proceeds as expected (offering to allocate the 28GB).